<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>菜鸟教程(runoob.com)</title>
    <style>
        /* 本例演示如何设置下边框的样式。 */
        p {
            border-style: solid;
        }

        p.none {
            border-bottom-style: none;
        }

        p.dotted {
            border-bottom-style: dotted;
        }

        p.dashed {
            border-bottom-style: dashed;
        }

        p.solid {
            border-bottom-style: solid;
        }

        p.double {
            border-bottom-style: double;
        }

        p.groove {
            border-bottom-style: groove;
        }

        p.ridge {
            border-bottom-style: ridge;
        }

        p.inset {
            border-bottom-style: inset;
        }

        p.outset {
            border-bottom-style: outset;
        }
    </style>
</head>

<body>
    <p class="none">无底边界。</p>
    <p class="dotted">点底边界。</p>
    <p class="dashed">虚线底边界。</p>
    <p class="solid">实线底边界。</p>
    <p class="double">双线底边界。</p>
    <p class="groove">凹槽底边界。</p>
    <p class="ridge">垄状底边界。</p>
    <p class="inset">嵌入底边界。</p>
    <p class="outset">外凸底边界。</p>
</body>

</html>